subhedral crystal
geology
Also known as: hypautomorphic crystal
Quick Summary
In geology, a subhedral crystal is one that is incompletely bounded by crystal planes, meaning it is partly faced. This term describes the crystal's form when it is not perfectly developed but still shows some of its characteristic crystal faces.1
While the term "subhedral" describes a crystal's form, other geological terms relate to crystal composition. For example, halide minerals are naturally occurring inorganic compounds that are salts of halogen acids. Common examples include halite (rock salt) and fluorite.2
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